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System of treatment of multilevel stream diversion type MBBR sewage and method of treatment

A sewage treatment system and deflector technology, applied in the field of sewage treatment, can solve the problems of long sewage treatment cycle, unstable effluent quality, large water head loss, etc., to achieve shortened implementation period, good water effluent effect, and less sludge production Effect

Active Publication Date: 2017-07-07
CHENGDU FUHUA ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Such as CN103030250 A, CN103739063 A, CN106430861A, CN106365375A and other Chinese invention patents all involve the MBBR process, but the fillers in the existing MBBR reactor are in a fluidized state by aeration and the lifting effect of water flow. In actual engineering, it is easy to appear The phenomenon of local filler accumulation leads to longer sewage treatment cycle, lower treatment efficiency, greater head loss, unstable effluent quality, etc.

Method used

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  • System of treatment of multilevel stream diversion type MBBR sewage and method of treatment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] 1. Multi-stage diversion MBBR sewage treatment system

[0042] like figure 1 As shown, the multi-stage diversion MBBR sewage treatment system includes denitrification section 1, aerobic section 2, filtration section 3, sedimentation section 4, control valve 5, agitator 6, screen 7, sludge pump 8, Mixed liquid return pump 9, fan 10, deflector A11, deflector B12, microporous aerator 13 and partition 14, denitrification section 1, aerobic section 2, filtration section 3 and sedimentation section 4 are connected in sequence, There is a partition 14 between the denitrification section 1 and the aerobic section 2, the filtration section 3 and the precipitation section 4, the denitrification section 1 and the aerobic section 2 are in overflow communication at the upper part of the partition 14, and the filtration section 3 and the sedimentation section Section 4 overflows and communicates with the upper part of the partition 14. The entrance of denitrification section 1 is an...

Embodiment 2

[0058] 1. Multi-stage diversion MBBR sewage treatment system (same as Example 1)

[0059] 2. Sewage treatment process

[0060] The concentration of sewage COD is 320mg / L, BOD 5 The concentration of SS is 170mg / L, the concentration of SS is 180mg / L, the concentration of TN is 35mg / L, the concentration of ammonia nitrogen is 25mg / L, the concentration of total phosphorus is 4mg / L, and the rural domestic sewage with a pH value of 6-9 , after the grid treatment, the large particle suspended matter and floating matter are intercepted, the sewage enters the regulating tank, and after staying in the regulating pond, the sewage is sent to the above-mentioned multi-stage diversion MBBR sewage treatment system, and denitrification is carried out in turn treatment, aerobic treatment, filtration section treatment and sedimentation section treatment to obtain qualified sewage with various physical, chemical and biochemical indicators. Finally, the sewage treated by the multi-stage diversio...

Embodiment 3

[0062] 1. Multi-stage diversion MBBR sewage treatment system (same as Example 1)

[0063] 2. Sewage treatment process

[0064] The concentration of sewage COD is 280mg / L, BOD 5 The concentration of SS is 150mg / L, the concentration of SS is 180mg / L, the concentration of TN is 35mg / L, the concentration of ammonia nitrogen is 25mg / L, the concentration of total phosphorus is 4mg / L, and the rural domestic sewage with a pH value of 6-9 , after the grid treatment, the large particle suspended matter and floating matter are intercepted, the sewage enters the regulating tank, and after staying in the regulating pond, the sewage is sent to the above-mentioned multi-stage diversion MBBR sewage treatment system, and denitrification is carried out in turn treatment, aerobic treatment, filtration section treatment and sedimentation section treatment to obtain qualified sewage with various physical, chemical and biochemical indicators. Finally, the sewage treated by the multi-stage diversio...

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Abstract

The invention belongs to the technical field of sewage treatment, in particular relates to a system of treatment of multilevel stream diversion type MBBR sewage and a method of treatment. By the sewage treatment process of the system of treatment of multilevel stream diversion type MBBR sewage, the process of 'grating + regulating reservoir + MBBR sewage treatment system + cloth filter reservoir filter + ultraviolet disinfection' is adopted as the main process, wherein the system of treatment of multilevel stream diversion type MBBR sewage is divided into a denitrification phase, an aerobic phase, a filter phase, and a precipitation phase, by the reasonable additional arrangement of a stream diversion type plate, the function division is achieved, the liquid streamline is optimized, the liquid head loss is reduced, the dwell time is extended, the processing effect of the reactor is greatly improved, and the liquid venting quality is stable on a long-term basis.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a multi-stage diversion MBBR sewage treatment system and a sewage treatment method. Background technique [0002] The principle of carrier fluidized bed moving bed biofilm reactor (MBBR) is to increase the biomass and biological species in the reactor by adding a certain amount of suspended carrier to the reactor, thereby improving the treatment efficiency of the reactor. Since the packing density is close to water, it is completely mixed with water during aeration. In addition, each carrier has different biological species inside and outside, and some anaerobic or facultative bacteria grow inside. The environment for microbial growth is Three phases of gas, liquid and solid. The collision and shearing of the carrier in the water makes the air bubbles smaller and increases the utilization rate of oxygen. The outside is good for bacteria, so that each carrier...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F101/10C02F101/16C02F101/30
CPCC02F1/001C02F1/32C02F3/00C02F3/301C02F3/305C02F9/00C02F2001/007C02F2101/105C02F2101/16C02F2101/30C02F2301/046C02F2301/08C02F2303/04
Inventor 张少华
Owner CHENGDU FUHUA ENVIRONMENTAL PROTECTION TECH CO LTD
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